Elsevier

Computational Geometry

Volume 78, June 2019, Pages 37-49
Computational Geometry

New pruning rules for the Steiner tree problem and 2-connected Steiner network problem

https://doi.org/10.1016/j.comgeo.2018.10.003Get rights and content
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Abstract

We introduce the concepts of k-lunes and k-lune inequalities, which form the basis for new geometric pruning rules for limiting the number of candidate full components that need to be considered when solving the Euclidean Steiner tree problem or the Euclidean 2-connected Steiner network problem. For the latter problem, these new pruning rules constitute the first empty region properties to have been developed for the problem. We show how to implement these rules efficiently and run computational experiments, indicating the extent to which they can improve the performance of state-of-the-art algorithms for these problems.

Keywords

Steiner trees
2-Connected networks
GeoSteiner
Lunes
Pruning rules

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